Generation of terahertz radiation by the axicon focusing of ionizing laser pulses
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- Akhmedzhanov, R.A., Ilyakov, I.E., Mironov, V.A. et al. Jetp Lett. (2008) 88: 569. doi:10.1134/S0021364008210042
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Experimental results on the generation of terahertz radiation in the gas breakdown by high-power quasi-monochromatic laser pulses focused by an axicon lens are presented. A theoretical model developed for the terahertzradiation generation includes the nonlinear interaction of a femtosecond pulse with an ionized gas and the excitation of transverse oscillations of the plasma column. The results of the theoretical analysis are compared with the experimental data.